Methane, nitro-
- Formula: CH3NO2
- Molecular weight: 61.0400
- IUPAC Standard InChIKey: LYGJENNIWJXYER-UHFFFAOYSA-N
- CAS Registry Number: 75-52-5
- Chemical structure:
This structure is also available as a 2d Mol file or as a computed 3d SD file
The 3d structure may be viewed using Java or Javascript. - Other names: Nitromethane; Nitrocarbol; CH3NO2; Nitrometan; UN 1261; NM; NSC 428
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Condensed phase thermochemistry data
Go To: Top, Phase change data, Henry's Law data, Gas phase ion energetics data, References, Notes
Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.
Data compiled as indicated in comments:
ALS - Hussein Y. Afeefy, Joel F. Liebman, and Stephen E. Stein
DH - Eugene S. Domalski and Elizabeth D. Hearing
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔfH°liquid | -113. ± 0.4 | kJ/mol | Ccb | Lebedeva and Ryadenko, 1973 | ALS |
ΔfH°liquid | -113.1 ± 0.63 | kJ/mol | Ccb | Cass, Fletcher, et al., 1958 | Reanalyzed by Cox and Pilcher, 1970, Original value = -93. ± 1. kJ/mol; ALS |
ΔfH°liquid | -89.04 ± 0.75 | kJ/mol | Ccb | Holcomb and Dorsey, 1949 | ALS |
Quantity | Value | Units | Method | Reference | Comment |
ΔcH°liquid | -709.6 ± 0.4 | kJ/mol | Ccb | Lebedeva and Ryadenko, 1973 | ALS |
ΔcH°liquid | -703. ± 1. | kJ/mol | Ccb | Knobel, Miroshnichenko, et al., 1971 | ALS |
ΔcH°liquid | -709.15 ± 0.59 | kJ/mol | Ccb | Cass, Fletcher, et al., 1958 | Reanalyzed by Cox and Pilcher, 1970, Original value = -730. ± 1. kJ/mol; ALS |
ΔcH°liquid | -733.25 ± 0.75 | kJ/mol | Ccb | Holcomb and Dorsey, 1949 | ALS |
ΔcH°liquid | -709.2 | kJ/mol | Ccb | Swientoslawski, 1910 | ALS |
Quantity | Value | Units | Method | Reference | Comment |
S°liquid | 171.75 | J/mol*K | N/A | Jones and Giauque, 1947 | DH |
Constant pressure heat capacity of liquid
Cp,liquid (J/mol*K) | Temperature (K) | Reference | Comment |
---|---|---|---|
106.22 | 308. | Berman and West, 1969 | T = 308 to 473 K.; DH |
108.8 | 313. | Hough, Mason, et al., 1950 | T = 313 to 363 K.; DH |
105.98 | 298.15 | Jones and Giauque, 1947 | T = 15 to 300 K.; DH |
100. | 298. | Williams, 1925 | T = 288 to 343 K. Equation only.; DH |
Phase change data
Go To: Top, Condensed phase thermochemistry data, Henry's Law data, Gas phase ion energetics data, References, Notes
Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.
Data compiled as indicated in comments:
TRC - Thermodynamics Research Center, NIST Boulder Laboratories, Chris Muzny director
AC - William E. Acree, Jr., James S. Chickos
ALS - Hussein Y. Afeefy, Joel F. Liebman, and Stephen E. Stein
DH - Eugene S. Domalski and Elizabeth D. Hearing
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
Tboil | 374.1 ± 0.8 | K | AVG | N/A | Average of 17 values; Individual data points |
Quantity | Value | Units | Method | Reference | Comment |
Tfus | 244.6 | K | N/A | Toops, 1956 | Uncertainty assigned by TRC = 0.05 K; TRC |
Tfus | 244.55 | K | N/A | Timmermans, 1952 | Uncertainty assigned by TRC = 0.4 K; TRC |
Tfus | 243.11 | K | N/A | Dreisbach and Martin, 1949 | Uncertainty assigned by TRC = 0.05 K; TRC |
Tfus | 244. | K | N/A | Joukovsky, 1934 | Uncertainty assigned by TRC = 2. K; TRC |
Tfus | 243.95 | K | N/A | Timmermans, 1921 | Uncertainty assigned by TRC = 0.3 K; TRC |
Quantity | Value | Units | Method | Reference | Comment |
Ttriple | 244.77 | K | N/A | Jones and Giauque, 1947, 2 | Uncertainty assigned by TRC = 0.02 K; TRC |
Quantity | Value | Units | Method | Reference | Comment |
Tc | 588. | K | N/A | Majer and Svoboda, 1985 | |
Tc | 588. | K | N/A | Griffin, 1949 | Uncertainty assigned by TRC = 3. K; taken from a plot of total P vs 1/T; TRC |
Quantity | Value | Units | Method | Reference | Comment |
Pc | 58.70 | bar | N/A | Ambrose, Counsell, et al., 1978 | Uncertainty assigned by TRC = 0.5865 bar; TRC |
Pc | 63.10 | bar | N/A | Griffin, 1949 | Uncertainty assigned by TRC = 1.0342 bar; from value pf vapor pressure at Tc, based on unpublished measurements; TRC |
Quantity | Value | Units | Method | Reference | Comment |
ρc | 5.77 | mol/l | N/A | Griffin, 1949 | Uncertainty assigned by TRC = 0.05 mol/l; deduced from a series of P vs 1/T plots for various sample sizes in a fixed volume bomb; TRC |
Quantity | Value | Units | Method | Reference | Comment |
ΔvapH° | 38. ± 3. | kJ/mol | AVG | N/A | Average of 7 values; Individual data points |
Enthalpy of vaporization
ΔvapH (kJ/mol) | Temperature (K) | Method | Reference | Comment |
---|---|---|---|---|
33.99 | 374.4 | N/A | Majer and Svoboda, 1985 | |
38.271 | 298.15 | N/A | Jones and Giauque, 1947 | P = 4.89 kPA; DH |
35.2 | 420. | A | Stephenson and Malanowski, 1987 | Based on data from 405. to 476. K. See also Berman and West, 1967.; AC |
36.8 | 343. | A | Stephenson and Malanowski, 1987 | Based on data from 328. to 410. K. See also McCullough, Scott, et al., 1954.; AC |
37.2 ± 0.1 | 318. | C | McCullough, Scott, et al., 1954 | AC |
36.3 ± 0.1 | 335. | C | McCullough, Scott, et al., 1954 | AC |
35.2 ± 0.1 | 353. | C | McCullough, Scott, et al., 1954 | AC |
34.0 ± 0.1 | 374. | C | McCullough, Scott, et al., 1954 | AC |
Enthalpy of vaporization
ΔvapH =
A exp(-βTr) (1 − Tr)β
ΔvapH =
Enthalpy of vaporization (at saturation pressure)
(kJ/mol)
Tr = reduced temperature (T / Tc)
View plot Requires a JavaScript / HTML 5 canvas capable browser.
Temperature (K) | A (kJ/mol) | β | Tc (K) | Reference | Comment |
---|---|---|---|---|---|
318. to 374. | 53.33 | 0.2732 | 588. | Majer and Svoboda, 1985 |
Entropy of vaporization
ΔvapS (J/mol*K) | Temperature (K) | Reference | Comment |
---|---|---|---|
128.36 | 298.15 | Jones and Giauque, 1947 | P; DH |
Antoine Equation Parameters
log10(P) = A − (B / (T + C))
P = vapor pressure (bar)
T = temperature (K)
View plot Requires a JavaScript / HTML 5 canvas capable browser.
Temperature (K) | A | B | C | Reference | Comment |
---|---|---|---|---|---|
405.0 to 476. | 4.1135 | 1229.574 | -76.221 | Berman and West, 1967 | Coefficents calculated by NIST from author's data. |
328.86 to 409.6 | 4.40542 | 1446.196 | -45.633 | McCullough, Scott, et al., 1954 | Coefficents calculated by NIST from author's data. |
Enthalpy of fusion
ΔfusH (kJ/mol) | Temperature (K) | Reference | Comment |
---|---|---|---|
9.703 | 244.77 | Jones and Giauque, 1947 | DH |
9.7 | 244.8 | Domalski and Hearing, 1996 | AC |
Entropy of fusion
ΔfusS (J/mol*K) | Temperature (K) | Reference | Comment |
---|---|---|---|
39.64 | 244.77 | Jones and Giauque, 1947 | DH |
Henry's Law data
Go To: Top, Condensed phase thermochemistry data, Phase change data, Gas phase ion energetics data, References, Notes
Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.
Data compiled by: Rolf Sander
Henry's Law constant (water solution)
kH(T) = k°H exp(d(ln(kH))/d(1/T) ((1/T) - 1/(298.15 K)))
k°H = Henry's law constant for solubility in water at 298.15 K (mol/(kg*bar))
d(ln(kH))/d(1/T) = Temperature dependence constant (K)
k°H (mol/(kg*bar)) | d(ln(kH))/d(1/T) (K) | Method | Reference | Comment |
---|---|---|---|---|
3.6 | Q | N/A | missing citation give several references for the Henry's law constants but don't assign them to specific species. | |
35. | X | N/A | Value given here as quoted by missing citation. | |
45. | M | N/A |
Gas phase ion energetics data
Go To: Top, Condensed phase thermochemistry data, Phase change data, Henry's Law data, References, Notes
Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.
Data evaluated as indicated in comments:
HL - Edward P. Hunter and Sharon G. Lias
L - Sharon G. Lias
Data compiled as indicated in comments:
B - John E. Bartmess
LL - Sharon G. Lias and Joel F. Liebman
LBLHLM - Sharon G. Lias, John E. Bartmess, Joel F. Liebman, John L. Holmes, Rhoda D. Levin, and W. Gary Mallard
LLK - Sharon G. Lias, Rhoda D. Levin, and Sherif A. Kafafi
RDSH - Henry M. Rosenstock, Keith Draxl, Bruce W. Steiner, and John T. Herron
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
IE (evaluated) | 11.08 ± 0.04 | eV | N/A | N/A | L |
Quantity | Value | Units | Method | Reference | Comment |
Proton affinity (review) | 754.6 | kJ/mol | N/A | Hunter and Lias, 1998 | HL |
Quantity | Value | Units | Method | Reference | Comment |
Gas basicity | 721.6 | kJ/mol | N/A | Hunter and Lias, 1998 | HL |
Electron affinity determinations
EA (eV) | Method | Reference | Comment |
---|---|---|---|
0.1720 ± 0.0060 | LPES | Adams, Schneider, et al., 2009 | B |
0.260 ± 0.080 | LPES | Compton, Carman Jr., et al., 1996 | dipole-bound state: 12±3 meV.; B |
0.01201 | N/A | Lecomte, Carles, et al., 2000 | Dipole-bound state; B |
0.500 ± 0.020 | ECD | Chen, Welk, et al., 1999 | Reanalysis of Chen and Wentworth, 1983; B |
0.49 ± 0.11 | IMRE | Grimsrud, Caldwell, et al., 1985 | ΔGea(423 K) = -12.1 kcal/mol; ΔSea (estimated) = +2.0 eu.; B |
0.451 ± 0.052 | ECD | Chen and Wentworth, 1983 | B |
0.44 ± 0.20 | NBIE | Compton, Reinhardt, et al., 1978 | B |
0.960 ± 0.010 | LPES | Goebbert, Pichugin, et al., 2009 | Stated electron affinity is the Vertical Detachment Energy; B |
Ionization energy determinations
IE (eV) | Method | Reference | Comment |
---|---|---|---|
11.07 | PE | Pasa-Tolic, Klasine, et al., 1990 | LL |
11.1 ± 0.05 | PI | Lifshitz, Rejwan, et al., 1988 | LL |
10.7 | PE | Ogden, Shaw, et al., 1983 | LBLHLM |
11.12 | PE | Gilman, Hsieh, et al., 1983 | LBLHLM |
11.05 | PE | Katsumata, Shiromaru, et al., 1982 | LBLHLM |
11.28 ± 0.08 | EI | Allam, Migahed, et al., 1982 | LBLHLM |
11.28 | PE | Kimura, Katsumata, et al., 1981 | LLK |
11.1 | PE | Asbrink, Svensson, et al., 1981 | LLK |
11.28 ± 0.08 | EI | Allam, Migahed, et al., 1981 | LLK |
11.07 ± 0.01 | PE | Rabalais, 1972 | LLK |
11.040 ± 0.017 | PI | Nicholson, 1970 | RDSH |
11.23 ± 0.01 | PE | Dewar, Shanshal, et al., 1969 | RDSH |
11.130 ± 0.006 | PI | Nicholson, 1965 | RDSH |
11.08 ± 0.03 | PI | Watanabe, Nakayama, et al., 1962 | RDSH |
11.29 | PE | Bajic, Humski, et al., 1985 | Vertical value; LBLHLM |
11.47 | PE | Katsumata, Shiromaru, et al., 1982 | Vertical value; LBLHLM |
11.31 | PE | Kobayashi, 1978 | Vertical value; LLK |
11.8 | PE | Rao, 1975 | Vertical value; LLK |
11.29 | PE | Kobayashi and Nagakura, 1974 | Vertical value; LLK |
11.31 ± 0.015 | PE | Kobayashi and Nagakura, 1972 | Vertical value; LLK |
Appearance energy determinations
Ion | AE (eV) | Other Products | Method | Reference | Comment |
---|---|---|---|---|---|
C+ | 22.83 ± 0.05 | ? | EI | Kandel, 1955 | RDSH |
CH2NO2+ | 11.8 ± 0.1 | H | PI | Lifshitz, Rejwan, et al., 1988 | LL |
CH2NO2+ | 11.97 ± 0.02 | H | EI | Kandel, 1955 | RDSH |
CH3+ | 13.6 | NO2 | EI | Haney and Franklin, 1968 | RDSH |
CH3+ | 12.6 | NO2 | EI | Tsuda and Hamill, 1966 | RDSH |
CH3NO+ | 11.75 ± 0.05 | O | PI | Lifshitz, Rejwan, et al., 1988 | LL |
CH3NO+ | 11.95 | O | PIPECO | Gilman, Hsieh, et al., 1983 | LBLHLM |
NO+ | 11.75 ± 0.05 | CH3O | PI | Lifshitz, Rejwan, et al., 1988 | LL |
NO+ | 11.5 | CH3O | PE | Ogden, Shaw, et al., 1983 | LBLHLM |
NO+ | 11.76 | CH3O | PIPECO | Gilman, Hsieh, et al., 1983 | LBLHLM |
NO+ | 11.7 | CH3O | PIPECO | Niwa, Tajima, et al., 1981 | LLK |
NO+ | 11.75 ± 0.01 | ? | PI | Nicholson, 1970 | RDSH |
NO2+ | 12.1 ± 0.1 | CH3 | PI | Lifshitz, Rejwan, et al., 1988 | LL |
NO2+ | 11.97 | CH3 | PE | Ogden, Shaw, et al., 1983 | LBLHLM |
NO2+ | 12.1 | CH3 | PIPECO | Niwa, Tajima, et al., 1981 | LLK |
NO2+ | 13. ± 0. | CH3 | EI | Collin, 1959 | RDSH |
O+ | 14.50 ± 0.16 | ? | EI | Kandel, 1955 | RDSH |
De-protonation reactions
CH2NO2- + =
By formula: CH2NO2- + H+ = CH3NO2
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 1498. ± 21. | kJ/mol | D-EA | Metz, Cyr, et al., 1991 | gas phase; B |
ΔrH° | 1491. ± 9.2 | kJ/mol | G+TS | Bartmess, Scott, et al., 1979 | gas phase; value altered from reference due to change in acidity scale; B |
ΔrH° | 1495. ± 12. | kJ/mol | G+TS | Cumming and Kebarle, 1978 | gas phase; B |
Quantity | Value | Units | Method | Reference | Comment |
ΔrG° | 1463. ± 8.4 | kJ/mol | IMRE | Bartmess, Scott, et al., 1979 | gas phase; value altered from reference due to change in acidity scale; B |
ΔrG° | 1467. ± 8.4 | kJ/mol | IMRE | Cumming and Kebarle, 1978 | gas phase; B |
ΔrG° | 1467. ± 8.4 | kJ/mol | IMRE | MacKay and Bohme, 1978 | gas phase; EA: < NO2; B |
References
Go To: Top, Condensed phase thermochemistry data, Phase change data, Henry's Law data, Gas phase ion energetics data, Notes
Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.
Lebedeva and Ryadenko, 1973
Lebedeva, N.D.; Ryadenko, V.L.R.,
Enthalpies of formation of nitroalkanes,
Russ. J. Phys. Chem. (Engl. Transl.), 1973, 47, 1382. [all data]
Cass, Fletcher, et al., 1958
Cass, R.C.; Fletcher, S.E.; Mortimer, C.T.; Quincey, P.G.; Springall, H.D.,
Heats of combustion and molecular structure. Part IV. Aliphatic nitroalkanes and nitric esters,
J. Chem. Soc., 1958, 958-962. [all data]
Cox and Pilcher, 1970
Cox, J.D.; Pilcher, G.,
Thermochemistry of Organic and Organometallic Compounds, Academic Press, New York, 1970, 1-636. [all data]
Holcomb and Dorsey, 1949
Holcomb, D.E.; Dorsey, C.L., Jr.,
Thermodynamic properties of nitroparaffins,
Ind. Eng. Chem., 1949, 41, 2788-2792. [all data]
Knobel, Miroshnichenko, et al., 1971
Knobel, Y.K.; Miroshnichenko, E.A.; Lebedev, Y.A.,
Heats of combustion of nitromethane and dinitromethane: enthalpies of formation of nitromethyl radicals and energies of dissociation of bonds in nitro derivatives of methane,
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Swientoslawski, 1910
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Thermochemische Untersuchungen der organischen Verbindungen. Dritte Mitteilung. Stickstoffhaltige Verbindungen.,
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Jones and Giauque, 1947
Jones, W.M.; Giauque, W.F.,
The entropy of nitromethane. Heat capacity of solid and liquid. Vapor pressure, heats of fusion and vaporization,
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Berman and West, 1969
Berman, H.A.; West, E.D.,
Heat capacity of liquid nitromethane from 35 to 200°C,
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Hough, Mason, et al., 1950
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Heat capacities of several organic liquids,
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Williams, 1925
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A study of the physical properties of nitromethane,
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Toops, 1956
Toops, E.E.,
Physical Properties of High Purity Nitroparaffins,
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Timmermans, 1952
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Freezing points of organic compounds. VVI New determinations.,
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Dreisbach, R.R.; Martin, R.A.,
Physical Data on Some Organic Compounds,
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Joukovsky, 1934
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Experimental Study of the Theory of Concentrated Solutions. XI. Thermodynamic Properties of Concentrated Solutions of Aliphatic Organic Compounds Containing Nitrogen.,
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Timmermans, 1921
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The Freezing Points of Organic Substances IV. New Exp. Determinations,
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Jones, W.M.; Giauque, W.F.,
The Entropy of Nitromethane. Heat Capacity of Solid and Liquid. Vapor Pressure, Heats of Fusion and Vaporizaion,
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Majer and Svoboda, 1985
Majer, V.; Svoboda, V.,
Enthalpies of Vaporization of Organic Compounds: A Critical Review and Data Compilation, Blackwell Scientific Publications, Oxford, 1985, 300. [all data]
Griffin, 1949
Griffin, D.N.,
The Critical Point of Nitromethane.,
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Ambrose, Counsell, et al., 1978
Ambrose, D.; Counsell, J.F.; Hicks, C.P.,
The correlation and estimation of vapour pressures: II a new procedure for estimation and extrapolation,
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Stephenson, Richard M.; Malanowski, Stanislaw,
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. [all data]
Berman and West, 1967
Berman, Horace A.; West, Estal Dale,
Density and vapor pressure of nitromethane 26.degree. to 200.degree.,
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McCullough, Scott, et al., 1954
McCullough, J.P.; Scott, D.W.; Pennington, R.E.; Hossenlopp, I.A.; Waddington, Guy,
Nitromethane: The Vapor Heat Capacity, Heat of Vaporization, Vapor Pressure and Gas Imperfection; the Chemical Thermodynamic Properties from 0 to 1500°K.,
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Domalski and Hearing, 1996
Domalski, Eugene S.; Hearing, Elizabeth D.,
Heat Capacities and Entropies of Organic Compounds in the Condensed Phase. Volume III,
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Hunter and Lias, 1998
Hunter, E.P.; Lias, S.G.,
Evaluated Gas Phase Basicities and Proton Affinities of Molecules: An Update,
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Adams, Schneider, et al., 2009
Adams, C.L.; Schneider, H.; Ervin, K.M.; Weber, J.M.,
Low-energy photoelectron imaging spectroscopy of nitromethane anions: Electron affinity, vibrational features, anisotropies, and the dipole-bound state,
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. [all data]
Compton, Carman Jr., et al., 1996
Compton, R.N.; Carman Jr.; Desfrancois, C.; Abdoul-Carmine, H.; Schermann, J.P.; Hendricks, J.H.,
On the binding of Electrons to Nitromethane: Dipole and Valence Bound Anions,
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. [all data]
Lecomte, Carles, et al., 2000
Lecomte, F.; Carles, S.; Desfrancois, C.; Johnson, M.A.,
Dipole bound and valence state coupling in argon-solvated nitromethane anions,
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. [all data]
Chen, Welk, et al., 1999
Chen, E.C.M.; Welk, N.; Chen, E.S.; Wentworth, W.E.,
Electron affinity, gas-phase acidity, bond dissociation energy, and negative ion states of nitromethane,
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. [all data]
Chen and Wentworth, 1983
Chen, E.C.M.; Wentworth, W.E.,
Determination of molecular electron affinities using the electron capture detector in the pulse sampling mode at steady state,
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Grimsrud, Caldwell, et al., 1985
Grimsrud, E.; Caldwell, G.; Kebarle, P.,
Electron affinities from electron transfer equilibria: A- + B = A + B-,
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Compton, Reinhardt, et al., 1978
Compton, R.N.; Reinhardt, P.W.; Cooper, C.D.,
Collisional ionization between alkali atoms and some methane derivatives: Electron affinities for CH3NO2, CF3I, and CF3Br,
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Goebbert, Pichugin, et al., 2009
Goebbert, D.J.; Pichugin, K.; Sanov, A.,
Low-lying electronic states of CH3NO2 via photoelectron imaging of the nitromethane anion,
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. [all data]
Pasa-Tolic, Klasine, et al., 1990
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The HeI PE spectrum and electronic structure of nitroethene,
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Lifshitz, Rejwan, et al., 1988
Lifshitz, C.; Rejwan, M.; Levin, I.; Peres, T.,
Unimolecular fragmentations of the nitromenthane cation,
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Ogden, Shaw, et al., 1983
Ogden, I.K.; Shaw, N.; Danby, C.J.; Powis, I.,
Competing dissociation channels of nitromethane and methyl nitrite ions and the role of electronic and internal modes of excitation,
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Gilman, Hsieh, et al., 1983
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Competition between isomerization and fragmentation of gaseous ions. II. Nitromethane and methylnitrite ions,
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Katsumata, Shiromaru, et al., 1982
Katsumata, S.; Shiromaru, H.; Mitani, K.; Iwata, S.; Kimura, K.,
Photoelectron angular distribution and assignments of photoelectron spectra of nitrogen dioxide, nitromethane and nitrobenzene,
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Allam, Migahed, et al., 1982
Allam, S.H.; Migahed, M.D.; El-Khodary, A.,
Electron impact ionization and dissociation of deuterated and non-deuterated methanol, methyl cyanide, nitromethane and nitrobenzene,
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Kimura, Katsumata, et al., 1981
Kimura, K.; Katsumata, S.; Achiba, Y.; Yamazaki, T.; Iwata, S.,
Ionization energies, Ab initio assignments, and valence electronic structure for 200 molecules
in Handbook of HeI Photoelectron Spectra of Fundamental Organic Compounds, Japan Scientific Soc. Press, Tokyo, 1981. [all data]
Asbrink, Svensson, et al., 1981
Asbrink, L.; Svensson, A.; Von Niessen, W.; Bieri, G.,
30.4 nm He(II) photoelectron spectra of organic molecules,
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Notes
Go To: Top, Condensed phase thermochemistry data, Phase change data, Henry's Law data, Gas phase ion energetics data, References
- Symbols used in this document:
AE Appearance energy Cp,liquid Constant pressure heat capacity of liquid EA Electron affinity IE (evaluated) Recommended ionization energy Pc Critical pressure S°liquid Entropy of liquid at standard conditions Tboil Boiling point Tc Critical temperature Tfus Fusion (melting) point Ttriple Triple point temperature d(ln(kH))/d(1/T) Temperature dependence parameter for Henry's Law constant k°H Henry's Law constant at 298.15K ΔcH°liquid Enthalpy of combustion of liquid at standard conditions ΔfH°liquid Enthalpy of formation of liquid at standard conditions ΔfusH Enthalpy of fusion ΔfusS Entropy of fusion ΔrG° Free energy of reaction at standard conditions ΔrH° Enthalpy of reaction at standard conditions ΔvapH Enthalpy of vaporization ΔvapH° Enthalpy of vaporization at standard conditions ΔvapS Entropy of vaporization ρc Critical density - Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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